From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 28090 invoked from network); 11 Oct 2022 05:31:38 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 11 Oct 2022 05:31:38 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 1058D40EC7; Tue, 11 Oct 2022 15:31:32 +1000 (AEST) Received: from junk.nocrew.org (junk.nocrew.org [51.15.56.219]) by minnie.tuhs.org (Postfix) with ESMTPS id A658840EC5 for ; Tue, 11 Oct 2022 15:31:25 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=junk.nocrew.org) by junk.nocrew.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1oi7rP-0007KS-Ci; Tue, 11 Oct 2022 05:31:23 +0000 From: Lars Brinkhoff To: Michael Casadevall Organization: nocrew References: <7wbkqjmpdt.fsf@junk.nocrew.org> Date: Tue, 11 Oct 2022 05:31:23 +0000 In-Reply-To: (Michael Casadevall's message of "Mon, 10 Oct 2022 16:31:04 -0400") Message-ID: <7w35bvlydw.fsf@junk.nocrew.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-SA-Exim-Connect-IP: 127.0.0.1 X-SA-Exim-Mail-From: lars@nocrew.org X-SA-Exim-Scanned: No (on junk.nocrew.org); SAEximRunCond expanded to false Message-ID-Hash: VI7LQGKGTDW6BICUKRSWSCKO54GPBGZA X-Message-ID-Hash: VI7LQGKGTDW6BICUKRSWSCKO54GPBGZA X-MailFrom: lars@nocrew.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: tuhs@tuhs.org X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Attempting To Build NOSC and BBN UNIXs + ARPANET code List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: TUHS Disclaimer: I will claim this is primarily about getting Unix onto the Arpanet, but it does also contain trace amounts of off-topic information. Reader discretion is adviced. Michael Casadevall wrote: > I do need to do a readthrough for the VDH driver, which says its for > "very distant hosts". I think that might be for the radio links The hardware interfaces between a host and an IMP came in three flavors: local host, distant host, and very distant host. The first two are more or less directly connected and I forget what the difference is. But a very distant host is basically connected over a phone line with a modem at each end, so it's a different beast. The VHD driver would be for this, whilst IMP11A and ACC are local or distant. > Hawaii Side note: apparently tapes from the unique Hawaii BCC 500 have been saved. So maybe that's one more possible re-Arpanet host. > Yup, that's what I figured. I've been trying to evaluate how much > survives Here's my take: https://gunkies.org/wiki/Network_Control_Program_(ARPANET)#Implementations So there are like four PDP-10 systems and two PDP-11. The ELF system will be a major challenge, RATS haven't been scanned off the printer listing, and the BCC 500... oh boy, let's not go there now. > I don't know if a runnable build of TENEX has been archived, I think so. I "almost" got one running but there was some problem... > or if ARPA stuff for TOPS-10/20 survived. TOPS-20AN seems to be there. TOPS-10, nothing so far. > I also want to look into System/360 and 370, but I get the sense none > of the mainframe stuff survived. I asked around; found nothing. CDC, same. > The other problem is of the surviving stacks, they all seem to be for > the later 96-bit leader, I'm not certain if any of the IMP software > that has been archived is new enough to work with that. Nothing for the 316/516 IMP, as far as I know. Pluribus IMP emulator, anyone?